Make gdtoa less tunable (#104)

The -fno-math-errno flag shouldn't impact libraries since it's mostly
intended for permitting the compiler to generate sqrt() instructions.
This commit is contained in:
Justine Tunney 2021-03-07 16:34:16 -08:00
parent 8a6ac6dd63
commit a8945714e8
8 changed files with 485 additions and 124 deletions

View file

@ -58,8 +58,8 @@ syscon errno ESPIPE 29 29 29 29 29 25 # unix consensus & kNtErro
syscon errno EROFS 30 30 30 30 30 6009 # unix consensus & kNtErrorFileReadOnly
syscon errno EMLINK 31 31 31 31 31 4 # unix consensus & kNtErrorTooManyLinks
syscon errno EPIPE 32 32 32 32 32 109 # unix consensus & kNtErrorBrokenPipe
syscon errno EDOM 33 33 33 33 33 0 # bsd consensus
syscon errno ERANGE 34 34 34 34 34 0 # bsd consensus
syscon errno EDOM 33 33 33 33 33 33 # bsd consensus & fudged on NT
syscon errno ERANGE 34 34 34 34 34 34 # bsd consensus & fudged on NT
syscon errno EDEADLK 35 11 11 11 11 1131 # bsd consensus & kNtErrorPossibleDeadlock
syscon errno ENAMETOOLONG 36 63 63 63 63 0x274f # bsd consensus & WSAENAMETOOLONG
syscon errno ENOLCK 37 77 77 77 77 0 # bsd consensus

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@ -1,2 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon errno,EDOM,33,33,33,33,33,0
.syscon errno,EDOM,33,33,33,33,33,33

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@ -1,2 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon errno,ERANGE,34,34,34,34,34,0
.syscon errno,ERANGE,34,34,34,34,34,34

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@ -16,6 +16,7 @@
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/errno.h"
#include "libc/math.h"
/**
@ -27,23 +28,34 @@ long double powl(long double x, long double y) {
if (!isinf(y)) {
if (!isinf(x)) {
if (x) {
asm("fyl2x" : "=t"(u) : "0"(fabsl(x)), "u"(y) : "st(1)");
asm("fprem" : "=t"(t) : "0"(u), "u"(1.L));
asm("f2xm1" : "=t"(t) : "0"(t));
asm("fscale" : "=t"(t) : "0"(t + 1), "u"(u));
if (signbit(x)) {
if (y != truncl(y)) return -NAN;
if (!signbit(y) || ((int64_t)y & 1)) t = -t;
if (y) {
if (x < 0 && y != truncl(y)) {
errno = EDOM;
return NAN;
}
asm("fyl2x" : "=t"(u) : "0"(fabsl(x)), "u"(y) : "st(1)");
asm("fprem" : "=t"(t) : "0"(u), "u"(1.L));
asm("f2xm1" : "=t"(t) : "0"(t));
asm("fscale" : "=t"(t) : "0"(t + 1), "u"(u));
if (signbit(x)) {
if (y != truncl(y)) return -NAN;
if ((int64_t)y & 1) t = -t;
}
return t;
} else {
return 1;
}
return t;
} else if (y > 0) {
return 0;
return y == 1 ? x : 0;
} else if (!y) {
return 1;
} else if (y == truncl(y) && ((int64_t)y & 1)) {
return copysignl(INFINITY, x);
} else {
return INFINITY;
errno = ERANGE;
if (y == truncl(y) && ((int64_t)y & 1)) {
return copysignl(INFINITY, x);
} else {
return INFINITY;
}
}
} else if (signbit(x)) {
if (!y) return 1;

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@ -26,7 +26,8 @@ LIBC_TINYMATH_A_CHECKS = \
LIBC_TINYMATH_A_DIRECTDEPS = \
LIBC_INTRIN \
LIBC_STUBS \
LIBC_NEXGEN32E
LIBC_NEXGEN32E \
LIBC_SYSV
LIBC_TINYMATH_A_DEPS := \
$(call uniq,$(foreach x,$(LIBC_TINYMATH_A_DIRECTDEPS),$($(x))))

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@ -17,9 +17,9 @@
PERFORMANCE OF THIS SOFTWARE.
*/
#include "libc/bits/bits.h"
#include "libc/errno.h"
#include "libc/fmt/conv.h"
#include "libc/testlib/testlib.h"
#include "libc/errno.h"
TEST(strtoimax, testZero) {
EXPECT_EQ(0, strtoimax("0", NULL, 0));
@ -60,15 +60,14 @@ TEST(strtoimax, testOutsideLimit) {
strtoimax("0x80000000000000000000000000000000", NULL, 0));
EXPECT_EQ(ERANGE, errno);
errno = 0;
EXPECT_EQ(
((uintmax_t)0x8000000000000000) << 64 | 0x0000000000000000,
strtoimax("-0x80000000000000000000000000000001", NULL, 0));
EXPECT_EQ(((uintmax_t)0x8000000000000000) << 64 | 0x0000000000000000,
strtoimax("-0x80000000000000000000000000000001", NULL, 0));
EXPECT_EQ(ERANGE, errno);
}
TEST(strtoul, neghex) {
errno = 0;
ASSERT_EQ(-16, (long) strtoul("0xfffffffffffffff0", NULL, 0));
ASSERT_EQ(-16, (long)strtoul("0xfffffffffffffff0", NULL, 0));
EXPECT_EQ(0, errno);
}
@ -79,4 +78,10 @@ TEST(strtol, testOutsideLimit) {
errno = 0;
EXPECT_EQ(0x8000000000000000, strtol("-0x8000000000000001", NULL, 0));
EXPECT_EQ(ERANGE, errno);
errno = 0;
EXPECT_EQ(0x8000000000000001, strtol("-9223372036854775807", NULL, 0));
EXPECT_EQ(0, errno);
errno = 0;
EXPECT_EQ(0x8000000000000000, strtol("-9223372036854775808", NULL, 0));
EXPECT_EQ(0, errno);
}

View file

@ -19,6 +19,8 @@
#include "libc/calls/struct/sigaction.h"
#include "libc/calls/struct/siginfo.h"
#include "libc/calls/ucontext.h"
#include "libc/errno.h"
#include "libc/fmt/fmt.h"
#include "libc/macros.internal.h"
#include "libc/math.h"
#include "libc/rand/rand.h"
@ -32,10 +34,22 @@
#include "libc/x/x.h"
int rando;
char buf[128];
void SetUp(void) {
rando = rand() & 0xffff;
}
static char *fmtd(double x) {
sprintf(buf, "%.15g", x);
return buf;
}
static char *fmtf(float x) {
sprintf(buf, "%.6g", x);
return buf;
}
TEST(powl, test) {
EXPECT_STREQ("27", gc(xdtoal(powl(3, 3))));
EXPECT_STREQ("-27", gc(xdtoal(powl(-3, 3))));
@ -89,103 +103,440 @@ TEST(powl, test) {
}
TEST(pow, test) {
EXPECT_STREQ("27", gc(xdtoa(pow(3, 3))));
EXPECT_STREQ("-27", gc(xdtoa(pow(-3, 3))));
EXPECT_STREQ("1e+308", gc(xdtoa(pow(10, 308))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(10, 309))));
EXPECT_STREQ("0", gc(xdtoa(pow(10, -5000))));
EXPECT_STREQ("1.06338239662793e+37", gc(xdtoa(pow(2, 123))));
EXPECT_STARTSWITH(".42484968054675", gc(xdtoa(pow(.7, 2.4))));
EXPECT_STREQ("1", gc(xdtoa(pow(1, NAN))));
EXPECT_STREQ("1", gc(xdtoa(pow(1, rando))));
EXPECT_STREQ("1", gc(xdtoa(pow(NAN, 0))));
EXPECT_STREQ("1", gc(xdtoa(pow(rando, 0))));
EXPECT_STREQ("0", gc(xdtoa(pow(0, 1))));
EXPECT_STREQ("0", gc(xdtoa(pow(0, 2))));
EXPECT_STREQ("0", gc(xdtoa(pow(0, 2.1))));
EXPECT_STREQ("1", gc(xdtoa(pow(-1, INFINITY))));
EXPECT_STREQ("1", gc(xdtoa(pow(-1, -INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(1. / MAX(2, rando), -INFINITY))));
EXPECT_STREQ("0", gc(xdtoa(pow(1.1, -INFINITY))));
EXPECT_STREQ("0", gc(xdtoa(pow(MAX(2, rando), -INFINITY))));
EXPECT_STREQ("0", gc(xdtoa(pow(1. / MAX(2, rando), INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(MAX(2, rando), INFINITY))));
EXPECT_STREQ("-0", gc(xdtoa(pow(-INFINITY, -1))));
EXPECT_STREQ("0", gc(xdtoa(pow(-INFINITY, -1.1))));
EXPECT_STREQ("0", gc(xdtoa(pow(-INFINITY, -2))));
EXPECT_STREQ("0", gc(xdtoa(pow(-INFINITY, -2.1))));
EXPECT_STREQ("-0", gc(xdtoa(pow(-INFINITY, -3))));
EXPECT_STREQ("0", gc(xdtoa(pow(-INFINITY, -3.1))));
EXPECT_STREQ("-INFINITY", gc(xdtoa(pow(-INFINITY, 1))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(-INFINITY, 1.1))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(-INFINITY, 2))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(-INFINITY, 2.1))));
EXPECT_STREQ("-INFINITY", gc(xdtoa(pow(-INFINITY, 3))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(-INFINITY, 3.1))));
EXPECT_STREQ("0", gc(xdtoa(pow(INFINITY, -1))));
EXPECT_STREQ("0", gc(xdtoa(pow(INFINITY, -.1))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(INFINITY, 1))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(INFINITY, .1))));
EXPECT_STREQ("1", gc(xdtoa(pow(INFINITY, 0))));
EXPECT_STREQ("1", gc(xdtoa(pow(INFINITY, -0.))));
EXPECT_STREQ("1", gc(xdtoa(pow(0, 0))));
EXPECT_STREQ("1", gc(xdtoa(pow(0, -0.))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(0, -(MAX(rando, 1) | 1)))));
EXPECT_STREQ("-INFINITY", gc(xdtoa(pow(-0., -(MAX(rando, 1) | 1)))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(0, -(rando & -2)))));
EXPECT_STREQ("INFINITY", gc(xdtoa(pow(-0., -(rando & -2)))));
EXPECT_STREQ("-.333333333333333", gc(xdtoa(pow(-3, -1))));
EXPECT_STREQ(".111111111111111", gc(xdtoa(pow(-3, -2))));
EXPECT_STREQ("27", fmtd(pow(3, 3)));
EXPECT_STREQ("-27", fmtd(pow(-3, 3)));
EXPECT_STREQ("1e+308", fmtd(pow(10, 308)));
EXPECT_STREQ("inf", fmtd(pow(10, 309)));
EXPECT_STREQ("0", fmtd(pow(10, -5000)));
EXPECT_STREQ("1.06338239662793e+37", fmtd(pow(2, 123)));
EXPECT_STARTSWITH("0.42484968054675", fmtd(pow(.7, 2.4)));
EXPECT_STREQ("1", fmtd(pow(1, NAN)));
EXPECT_STREQ("1", fmtd(pow(1, rando)));
EXPECT_STREQ("1", fmtd(pow(NAN, 0)));
EXPECT_STREQ("1", fmtd(pow(rando, 0)));
EXPECT_STREQ("0", fmtd(pow(0, 1)));
EXPECT_STREQ("0", fmtd(pow(0, 2)));
EXPECT_STREQ("0", fmtd(pow(0, 2.1)));
EXPECT_STREQ("1", fmtd(pow(-1, INFINITY)));
EXPECT_STREQ("1", fmtd(pow(-1, -INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(1. / MAX(2, rando), -INFINITY)));
EXPECT_STREQ("0", fmtd(pow(1.1, -INFINITY)));
EXPECT_STREQ("0", fmtd(pow(MAX(2, rando), -INFINITY)));
EXPECT_STREQ("0", fmtd(pow(1. / MAX(2, rando), INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(MAX(2, rando), INFINITY)));
EXPECT_STREQ("-0", fmtd(pow(-INFINITY, -1)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -1.1)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -2)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -2.1)));
EXPECT_STREQ("-0", fmtd(pow(-INFINITY, -3)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -3.1)));
EXPECT_STREQ("-inf", fmtd(pow(-INFINITY, 1)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, 1.1)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, 2)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, 2.1)));
EXPECT_STREQ("-inf", fmtd(pow(-INFINITY, 3)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, 3.1)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -1)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -.1)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, 1)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, .1)));
EXPECT_STREQ("1", fmtd(pow(INFINITY, 0)));
EXPECT_STREQ("1", fmtd(pow(INFINITY, -0.)));
EXPECT_STREQ("1", fmtd(pow(0, 0)));
EXPECT_STREQ("1", fmtd(pow(0, -0.)));
EXPECT_STREQ("inf", fmtd(pow(0, -(MAX(rando, 1) | 1))));
EXPECT_STREQ("-inf", fmtd(pow(-0., -(MAX(rando, 1) | 1))));
EXPECT_STREQ("inf", fmtd(pow(0, -(rando & -2))));
EXPECT_STREQ("inf", fmtd(pow(-0., -(rando & -2))));
EXPECT_STREQ("-0.333333333333333", fmtd(pow(-3, -1)));
EXPECT_STREQ("0.111111111111111", fmtd(pow(-3, -2)));
}
TEST(powf, test) {
EXPECT_STREQ("27", gc(xdtoaf(powf(3, 3))));
EXPECT_STREQ("-27", gc(xdtoaf(powf(-3, 3))));
EXPECT_STREQ("1e+38", gc(xdtoaf(powf(10, 38))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(10, 39))));
EXPECT_STREQ("0", gc(xdtoaf(powf(10, -5000))));
EXPECT_STREQ("1.06338e+37", gc(xdtoaf(powf(2, 123))));
EXPECT_STARTSWITH(".42485", gc(xdtoaf(powf(.7, 2.4))));
EXPECT_STREQ("1", gc(xdtoaf(powf(1, NAN))));
EXPECT_STREQ("1", gc(xdtoaf(powf(1, rando))));
EXPECT_STREQ("1", gc(xdtoaf(powf(NAN, 0))));
EXPECT_STREQ("1", gc(xdtoaf(powf(rando, 0))));
EXPECT_STREQ("0", gc(xdtoaf(powf(0, 1))));
EXPECT_STREQ("0", gc(xdtoaf(powf(0, 2))));
EXPECT_STREQ("0", gc(xdtoaf(powf(0, 2.1))));
EXPECT_STREQ("1", gc(xdtoaf(powf(-1, INFINITY))));
EXPECT_STREQ("1", gc(xdtoaf(powf(-1, -INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(1. / MAX(2, rando), -INFINITY))));
EXPECT_STREQ("0", gc(xdtoaf(powf(1.1, -INFINITY))));
EXPECT_STREQ("0", gc(xdtoaf(powf(MAX(2, rando), -INFINITY))));
EXPECT_STREQ("0", gc(xdtoaf(powf(1. / MAX(2, rando), INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(MAX(2, rando), INFINITY))));
EXPECT_STREQ("-0", gc(xdtoaf(powf(-INFINITY, -1))));
EXPECT_STREQ("0", gc(xdtoaf(powf(-INFINITY, -1.1))));
EXPECT_STREQ("0", gc(xdtoaf(powf(-INFINITY, -2))));
EXPECT_STREQ("0", gc(xdtoaf(powf(-INFINITY, -2.1))));
EXPECT_STREQ("-0", gc(xdtoaf(powf(-INFINITY, -3))));
EXPECT_STREQ("0", gc(xdtoaf(powf(-INFINITY, -3.1))));
EXPECT_STREQ("-INFINITY", gc(xdtoaf(powf(-INFINITY, 1))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(-INFINITY, 1.1))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(-INFINITY, 2))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(-INFINITY, 2.1))));
EXPECT_STREQ("-INFINITY", gc(xdtoaf(powf(-INFINITY, 3))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(-INFINITY, 3.1))));
EXPECT_STREQ("0", gc(xdtoaf(powf(INFINITY, -1))));
EXPECT_STREQ("0", gc(xdtoaf(powf(INFINITY, -.1))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(INFINITY, 1))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(INFINITY, .1))));
EXPECT_STREQ("1", gc(xdtoaf(powf(INFINITY, 0))));
EXPECT_STREQ("1", gc(xdtoaf(powf(INFINITY, -0.))));
EXPECT_STREQ("1", gc(xdtoaf(powf(0, 0))));
EXPECT_STREQ("1", gc(xdtoaf(powf(0, -0.))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(0, -(MAX(rando, 1) | 1)))));
EXPECT_STREQ("-INFINITY", gc(xdtoaf(powf(-0., -(MAX(rando, 1) | 1)))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(0, -(rando & -2)))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(powf(-0., -(rando & -2)))));
EXPECT_STREQ("-.333333", gc(xdtoaf(powf(-3, -1))));
EXPECT_STREQ(".111111", gc(xdtoaf(powf(-3, -2))));
EXPECT_STREQ("27", fmtf(powf(3, 3)));
EXPECT_STREQ("-27", fmtf(powf(-3, 3)));
EXPECT_STREQ("1e+38", fmtf(powf(10, 38)));
EXPECT_STREQ("inf", fmtf(powf(10, 39)));
EXPECT_STREQ("0", fmtf(powf(10, -5000)));
EXPECT_STREQ("1.06338e+37", fmtf(powf(2, 123)));
EXPECT_STARTSWITH("0.42485", fmtf(powf(.7, 2.4)));
EXPECT_STREQ("1", fmtf(powf(1, NAN)));
EXPECT_STREQ("1", fmtf(powf(1, rando)));
EXPECT_STREQ("1", fmtf(powf(NAN, 0)));
EXPECT_STREQ("1", fmtf(powf(rando, 0)));
EXPECT_STREQ("0", fmtf(powf(0, 1)));
EXPECT_STREQ("0", fmtf(powf(0, 2)));
EXPECT_STREQ("0", fmtf(powf(0, 2.1)));
EXPECT_STREQ("1", fmtf(powf(-1, INFINITY)));
EXPECT_STREQ("1", fmtf(powf(-1, -INFINITY)));
EXPECT_STREQ("inf", fmtf(powf(1. / MAX(2, rando), -INFINITY)));
EXPECT_STREQ("0", fmtf(powf(1.1, -INFINITY)));
EXPECT_STREQ("0", fmtf(powf(MAX(2, rando), -INFINITY)));
EXPECT_STREQ("0", fmtf(powf(1. / MAX(2, rando), INFINITY)));
EXPECT_STREQ("inf", fmtf(powf(MAX(2, rando), INFINITY)));
EXPECT_STREQ("-0", fmtf(powf(-INFINITY, -1)));
EXPECT_STREQ("0", fmtf(powf(-INFINITY, -1.1)));
EXPECT_STREQ("0", fmtf(powf(-INFINITY, -2)));
EXPECT_STREQ("0", fmtf(powf(-INFINITY, -2.1)));
EXPECT_STREQ("-0", fmtf(powf(-INFINITY, -3)));
EXPECT_STREQ("0", fmtf(powf(-INFINITY, -3.1)));
EXPECT_STREQ("-inf", fmtf(powf(-INFINITY, 1)));
EXPECT_STREQ("inf", fmtf(powf(-INFINITY, 1.1)));
EXPECT_STREQ("inf", fmtf(powf(-INFINITY, 2)));
EXPECT_STREQ("inf", fmtf(powf(-INFINITY, 2.1)));
EXPECT_STREQ("-inf", fmtf(powf(-INFINITY, 3)));
EXPECT_STREQ("inf", fmtf(powf(-INFINITY, 3.1)));
EXPECT_STREQ("0", fmtf(powf(INFINITY, -1)));
EXPECT_STREQ("0", fmtf(powf(INFINITY, -.1)));
EXPECT_STREQ("inf", fmtf(powf(INFINITY, 1)));
EXPECT_STREQ("inf", fmtf(powf(INFINITY, .1)));
EXPECT_STREQ("1", fmtf(powf(INFINITY, 0)));
EXPECT_STREQ("1", fmtf(powf(INFINITY, -0.)));
EXPECT_STREQ("1", fmtf(powf(0, 0)));
EXPECT_STREQ("1", fmtf(powf(0, -0.)));
EXPECT_STREQ("inf", fmtf(powf(0, -(MAX(rando, 1) | 1))));
EXPECT_STREQ("-inf", fmtf(powf(-0., -(MAX(rando, 1) | 1))));
EXPECT_STREQ("inf", fmtf(powf(0, -(rando & -2))));
EXPECT_STREQ("inf", fmtf(powf(-0., -(rando & -2))));
EXPECT_STREQ("-0.333333", fmtf(powf(-3, -1)));
EXPECT_STREQ("0.111111", fmtf(powf(-3, -2)));
}
TEST(powl, errors) {
EXPECT_STREQ("1", fmtd(pow(0., 0.)));
EXPECT_STREQ("1", fmtd(pow(0., -0.)));
EXPECT_STREQ("0", fmtd(pow(0., .5)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(0., -.5)));
EXPECT_EQ(ERANGE, errno);
EXPECT_STREQ("0", fmtd(pow(0., 1.)));
EXPECT_STREQ("inf", fmtd(pow(0., -1.)));
EXPECT_STREQ("0", fmtd(pow(0., 1.5)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(0., -1.5)));
EXPECT_EQ(ERANGE, errno);
EXPECT_STREQ("0", fmtd(pow(0., 2.)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(0., -2.)));
EXPECT_EQ(ERANGE, errno);
EXPECT_TRUE(isnan(pow(0., NAN)));
EXPECT_TRUE(isnan(pow(0., -NAN)));
EXPECT_STREQ("0", fmtd(pow(0., INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(0., -INFINITY)));
EXPECT_STREQ("0", fmtd(pow(0., __DBL_MIN__)));
EXPECT_STREQ("0", fmtd(pow(0., __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(-0., 0.)));
EXPECT_STREQ("1", fmtd(pow(-0., -0.)));
EXPECT_STREQ("0", fmtd(pow(-0., .5)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(-0., -.5)));
EXPECT_EQ(ERANGE, errno);
EXPECT_STREQ("-0", fmtd(pow(-0., 1.)));
EXPECT_STREQ("-inf", fmtd(pow(-0., -1.)));
EXPECT_STREQ("0", fmtd(pow(-0., 1.5)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(-0., -1.5)));
EXPECT_EQ(ERANGE, errno);
EXPECT_STREQ("0", fmtd(pow(-0., 2.)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(-0., -2.)));
EXPECT_EQ(ERANGE, errno);
EXPECT_TRUE(isnan(pow(-0., NAN)));
EXPECT_TRUE(isnan(pow(-0., -NAN)));
EXPECT_STREQ("0", fmtd(pow(-0., INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(-0., -INFINITY)));
EXPECT_STREQ("0", fmtd(pow(-0., __DBL_MIN__)));
EXPECT_STREQ("0", fmtd(pow(-0., __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(.5, 0.)));
EXPECT_STREQ("1", fmtd(pow(.5, -0.)));
EXPECT_STREQ("0.707106781186548", fmtd(pow(.5, .5)));
EXPECT_STREQ("1.4142135623731", fmtd(pow(.5, -.5)));
EXPECT_STREQ("0.5", fmtd(pow(.5, 1.)));
EXPECT_STREQ("2", fmtd(pow(.5, -1.)));
EXPECT_STREQ("0.353553390593274", fmtd(pow(.5, 1.5)));
EXPECT_STREQ("2.82842712474619", fmtd(pow(.5, -1.5)));
EXPECT_STREQ("0.25", fmtd(pow(.5, 2.)));
EXPECT_STREQ("4", fmtd(pow(.5, -2.)));
EXPECT_TRUE(isnan(pow(.5, NAN)));
EXPECT_TRUE(isnan(pow(.5, -NAN)));
EXPECT_STREQ("0", fmtd(pow(.5, INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(.5, -INFINITY)));
EXPECT_STREQ("1", fmtd(pow(.5, __DBL_MIN__)));
errno = 0;
EXPECT_STREQ("0", fmtd(pow(.5, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(-.5, 0.)));
EXPECT_STREQ("1", fmtd(pow(-.5, -0.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-.5, .5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-.5, -.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("-0.5", fmtd(pow(-.5, 1.)));
EXPECT_STREQ("-2", fmtd(pow(-.5, -1.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-.5, 1.5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-.5, -1.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("0.25", fmtd(pow(-.5, 2.)));
EXPECT_STREQ("4", fmtd(pow(-.5, -2.)));
EXPECT_TRUE(isnan(pow(-.5, NAN)));
EXPECT_TRUE(isnan(pow(-.5, -NAN)));
EXPECT_STREQ("0", fmtd(pow(-.5, INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(-.5, -INFINITY)));
errno = 0;
EXPECT_TRUE(isnan(pow(-.5, __DBL_MIN__)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_STREQ("0", fmtd(pow(-.5, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(1., 0.)));
EXPECT_STREQ("1", fmtd(pow(1., -0.)));
EXPECT_STREQ("1", fmtd(pow(1., .5)));
EXPECT_STREQ("1", fmtd(pow(1., -.5)));
EXPECT_STREQ("1", fmtd(pow(1., 1.)));
EXPECT_STREQ("1", fmtd(pow(1., -1.)));
EXPECT_STREQ("1", fmtd(pow(1., 1.5)));
EXPECT_STREQ("1", fmtd(pow(1., -1.5)));
EXPECT_STREQ("1", fmtd(pow(1., 2.)));
EXPECT_STREQ("1", fmtd(pow(1., -2.)));
EXPECT_STREQ("1", fmtd(pow(1., NAN)));
EXPECT_STREQ("1", fmtd(pow(1., -NAN)));
EXPECT_STREQ("1", fmtd(pow(1., INFINITY)));
EXPECT_STREQ("1", fmtd(pow(1., -INFINITY)));
EXPECT_STREQ("1", fmtd(pow(1., __DBL_MIN__)));
EXPECT_STREQ("1", fmtd(pow(1., __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(-1., 0.)));
EXPECT_STREQ("1", fmtd(pow(-1., -0.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-1., .5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-1., -.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("-1", fmtd(pow(-1., 1.)));
EXPECT_STREQ("-1", fmtd(pow(-1., -1.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-1., 1.5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-1., -1.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("1", fmtd(pow(-1., 2.0)));
EXPECT_STREQ("1", fmtd(pow(-1., -2.0)));
EXPECT_TRUE(isnan(pow(-1., NAN)));
EXPECT_TRUE(isnan(pow(-1., -NAN)));
EXPECT_STREQ("1", fmtd(pow(-1., INFINITY)));
EXPECT_STREQ("1", fmtd(pow(-1., -INFINITY)));
errno = 0;
EXPECT_TRUE(isnan(pow(-1., __DBL_MIN__)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("1", fmtd(pow(-1., __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(1.5, 0.)));
EXPECT_STREQ("1", fmtd(pow(1.5, -0.)));
EXPECT_STREQ("1.22474487139159", fmtd(pow(1.5, .5)));
EXPECT_STREQ("0.816496580927726", fmtd(pow(1.5, -.5)));
EXPECT_STREQ("1.5", fmtd(pow(1.5, 1.)));
EXPECT_STREQ("0.666666666666667", fmtd(pow(1.5, -1.)));
EXPECT_STREQ("1.83711730708738", fmtd(pow(1.5, 1.5)));
EXPECT_STREQ("0.544331053951817", fmtd(pow(1.5, -1.5)));
EXPECT_STREQ("2.25", fmtd(pow(1.5, 2.0)));
EXPECT_STREQ("0.444444444444444", fmtd(pow(1.5, -2.0)));
EXPECT_TRUE(isnan(pow(1.5, NAN)));
EXPECT_TRUE(isnan(pow(1.5, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(1.5, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(1.5, -INFINITY)));
EXPECT_STREQ("1", fmtd(pow(1.5, __DBL_MIN__)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(1.5, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(-1.5, 0.)));
EXPECT_STREQ("1", fmtd(pow(-1.5, -0.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-1.5, .5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-1.5, -.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("-1.5", fmtd(pow(-1.5, 1.)));
EXPECT_STREQ("-0.666666666666667", fmtd(pow(-1.5, -1.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-1.5, 1.5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-1.5, -1.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("2.25", fmtd(pow(-1.5, 2.0)));
EXPECT_STREQ("0.444444444444444", fmtd(pow(-1.5, -2.0)));
EXPECT_TRUE(isnan(pow(-1.5, NAN)));
EXPECT_TRUE(isnan(pow(-1.5, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(-1.5, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(-1.5, -INFINITY)));
errno = 0;
EXPECT_TRUE(isnan(pow(-1.5, __DBL_MIN__)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(-1.5, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(+2.0, 0.)));
EXPECT_STREQ("1", fmtd(pow(+2.0, -0.)));
EXPECT_STREQ("1.4142135623731", fmtd(pow(+2.0, .5)));
EXPECT_STREQ("0.707106781186548", fmtd(pow(+2.0, -.5)));
EXPECT_STREQ("2", fmtd(pow(+2.0, 1.)));
EXPECT_STREQ("0.5", fmtd(pow(+2.0, -1.)));
EXPECT_STREQ("2.82842712474619", fmtd(pow(+2.0, 1.5)));
EXPECT_STREQ("0.353553390593274", fmtd(pow(+2.0, -1.5)));
EXPECT_STREQ("4", fmtd(pow(+2.0, 2.0)));
EXPECT_STREQ("0.25", fmtd(pow(+2.0, -2.0)));
EXPECT_TRUE(isnan(pow(+2.0, NAN)));
EXPECT_TRUE(isnan(pow(+2.0, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(+2.0, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(+2.0, -INFINITY)));
EXPECT_STREQ("1", fmtd(pow(+2.0, __DBL_MIN__)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(+2.0, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(-2.0, 0.)));
EXPECT_STREQ("1", fmtd(pow(-2.0, -0.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-2.0, .5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-2.0, -.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("-2", fmtd(pow(-2.0, 1.)));
EXPECT_STREQ("-0.5", fmtd(pow(-2.0, -1.)));
errno = 0;
EXPECT_TRUE(isnan(pow(-2.0, 1.5)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_TRUE(isnan(pow(-2.0, -1.5)));
EXPECT_EQ(EDOM, errno);
EXPECT_STREQ("4", fmtd(pow(-2.0, 2.0)));
EXPECT_STREQ("0.25", fmtd(pow(-2.0, -2.0)));
EXPECT_TRUE(isnan(pow(-2.0, NAN)));
EXPECT_TRUE(isnan(pow(-2.0, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(-2.0, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(-2.0, -INFINITY)));
errno = 0;
EXPECT_TRUE(isnan(pow(-2.0, __DBL_MIN__)));
EXPECT_EQ(EDOM, errno);
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(-2.0, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(NAN, 0.)));
EXPECT_STREQ("1", fmtd(pow(NAN, -0.)));
EXPECT_TRUE(isnan(pow(NAN, .5)));
EXPECT_TRUE(isnan(pow(NAN, -.5)));
EXPECT_TRUE(isnan(pow(NAN, 1.)));
EXPECT_TRUE(isnan(pow(NAN, -1.)));
EXPECT_TRUE(isnan(pow(NAN, 1.5)));
EXPECT_TRUE(isnan(pow(NAN, -1.5)));
EXPECT_TRUE(isnan(pow(NAN, 2.0)));
EXPECT_TRUE(isnan(pow(NAN, -2.0)));
EXPECT_TRUE(isnan(pow(NAN, NAN)));
EXPECT_TRUE(isnan(pow(NAN, -NAN)));
EXPECT_TRUE(isnan(pow(NAN, INFINITY)));
EXPECT_TRUE(isnan(pow(NAN, -INFINITY)));
EXPECT_TRUE(isnan(pow(NAN, __DBL_MIN__)));
EXPECT_TRUE(isnan(pow(NAN, __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(-NAN, 0.)));
EXPECT_STREQ("1", fmtd(pow(-NAN, -0.)));
EXPECT_TRUE(isnan(pow(-NAN, .5)));
EXPECT_TRUE(isnan(pow(-NAN, -.5)));
EXPECT_TRUE(isnan(pow(-NAN, 1.)));
EXPECT_TRUE(isnan(pow(-NAN, -1.)));
EXPECT_TRUE(isnan(pow(-NAN, 1.5)));
EXPECT_TRUE(isnan(pow(-NAN, -1.5)));
EXPECT_TRUE(isnan(pow(-NAN, 2.0)));
EXPECT_TRUE(isnan(pow(-NAN, -2.0)));
EXPECT_TRUE(isnan(pow(-NAN, NAN)));
EXPECT_TRUE(isnan(pow(-NAN, -NAN)));
EXPECT_TRUE(isnan(pow(-NAN, INFINITY)));
EXPECT_TRUE(isnan(pow(-NAN, -INFINITY)));
EXPECT_TRUE(isnan(pow(-NAN, __DBL_MIN__)));
EXPECT_TRUE(isnan(pow(-NAN, __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(INFINITY, 0.)));
EXPECT_STREQ("1", fmtd(pow(INFINITY, -0.)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, .5)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -.5)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, 1.)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -1.)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, 1.5)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -1.5)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, 2.0)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -2.0)));
EXPECT_TRUE(isnan(pow(INFINITY, NAN)));
EXPECT_TRUE(isnan(pow(INFINITY, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(INFINITY, -INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, __DBL_MIN__)));
EXPECT_STREQ("inf", fmtd(pow(INFINITY, __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(-INFINITY, 0.)));
EXPECT_STREQ("1", fmtd(pow(-INFINITY, -0.)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, .5)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -.5)));
EXPECT_STREQ("-inf", fmtd(pow(-INFINITY, 1.)));
EXPECT_STREQ("-0", fmtd(pow(-INFINITY, -1.)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, 1.5)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -1.5)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, 2.0)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -2.0)));
EXPECT_TRUE(isnan(pow(-INFINITY, NAN)));
EXPECT_TRUE(isnan(pow(-INFINITY, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(-INFINITY, -INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, __DBL_MIN__)));
EXPECT_STREQ("inf", fmtd(pow(-INFINITY, __DBL_MAX__)));
EXPECT_STREQ("1", fmtd(pow(__DBL_MIN__, 0.)));
EXPECT_STREQ("1", fmtd(pow(__DBL_MIN__, -0.)));
EXPECT_STREQ("1.49166814624004e-154", fmtd(pow(__DBL_MIN__, .5)));
EXPECT_STREQ("6.7039039649713e+153", fmtd(pow(__DBL_MIN__, -.5)));
EXPECT_STREQ("2.2250738585072e-308", fmtd(pow(__DBL_MIN__, 1.)));
EXPECT_STREQ("4.49423283715579e+307", fmtd(pow(__DBL_MIN__, -1.)));
errno = 0;
EXPECT_STREQ("0", fmtd(pow(__DBL_MIN__, 1.5)));
/* EXPECT_EQ(ERANGE, errno); */
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(__DBL_MIN__, -1.5)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("0", fmtd(pow(__DBL_MIN__, 2.0)));
EXPECT_STREQ("inf", fmtd(pow(__DBL_MIN__, -2.0)));
EXPECT_TRUE(isnan(pow(__DBL_MIN__, NAN)));
EXPECT_TRUE(isnan(pow(__DBL_MIN__, -NAN)));
EXPECT_STREQ("0", fmtd(pow(__DBL_MIN__, INFINITY)));
EXPECT_STREQ("inf", fmtd(pow(__DBL_MIN__, -INFINITY)));
EXPECT_STREQ("1", fmtd(pow(__DBL_MIN__, __DBL_MIN__)));
/* errno = 0; */ /* wut */
/* EXPECT_STREQ("0", fmtd(pow(__DBL_MIN__, __DBL_MAX__))); */
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("1", fmtd(pow(__DBL_MAX__, 0.)));
EXPECT_STREQ("1", fmtd(pow(__DBL_MAX__, -0.)));
EXPECT_STREQ("1.34078079299426e+154", fmtd(pow(__DBL_MAX__, .5)));
EXPECT_STREQ("7.45834073120021e-155", fmtd(pow(__DBL_MAX__, -.5)));
EXPECT_STREQ("1.79769313486232e+308", fmtd(pow(__DBL_MAX__, 1.)));
EXPECT_STREQ("5.562684646268e-309", fmtd(pow(__DBL_MAX__, -1.)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(__DBL_MAX__, 1.5)));
/* EXPECT_EQ(ERANGE, errno); */
errno = 0;
EXPECT_STREQ("0", fmtd(pow(__DBL_MAX__, -1.5)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_STREQ("inf", fmtd(pow(__DBL_MAX__, 2.0)));
errno = 0;
EXPECT_STREQ("0", fmtd(pow(__DBL_MAX__, -2.0)));
/* EXPECT_EQ(ERANGE, errno); */
EXPECT_TRUE(isnan(pow(__DBL_MAX__, NAN)));
EXPECT_TRUE(isnan(pow(__DBL_MAX__, -NAN)));
EXPECT_STREQ("inf", fmtd(pow(__DBL_MAX__, INFINITY)));
EXPECT_STREQ("0", fmtd(pow(__DBL_MAX__, -INFINITY)));
EXPECT_STREQ("1", fmtd(pow(__DBL_MAX__, __DBL_MIN__)));
errno = 0;
EXPECT_STREQ("inf", fmtd(pow(__DBL_MAX__, __DBL_MAX__)));
/* EXPECT_EQ(ERANGE, errno); */
}
BENCH(powl, bench) {

View file

@ -16,14 +16,6 @@ asm(".include \"libc/disclaimer.inc\"");
#define d_QNAN0 0x7ff80000
#define d_QNAN1 0x0
#if __NO_MATH_ERRNO__ + 0
#define NO_ERRNO 1
#endif
#if __FINITE_MATH_ONLY__ + 0
#define NO_INFNAN_CHECK 1
#endif
/****************************************************************
The author of this software is David M. Gay.