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Add more libm unit tests and fixes

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See #61
This commit is contained in:
Justine Tunney 2021-03-02 13:57:23 -08:00
parent 32e289b1d8
commit 9367253b4d
15 changed files with 390 additions and 124 deletions
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45
libc/tinymath/ceil.S
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@ -17,28 +17,41 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.internal.h"
.source __FILE__
// Returns smallest integral not less than 𝑥.
//
// @param 𝑥 is double scalar in low half of %xmm0
// @return double scalar in low half of %xmm0
// @see round(),rint(),nearbyint()
// @see vroundsd $_MM_FROUND_TO_POS_INF|_MM_FROUND_NO_EXC,%xmm0,%xmm0,%xmm0
ceil: .leafprologue
.profilable
movsd nan(%rip),%xmm1
movsd sig(%rip),%xmm2
andpd %xmm0,%xmm1
comisd %xmm1,%xmm2
movsd 4f(%rip),%xmm3
movsd 2f(%rip),%xmm4
movapd %xmm0,%xmm2
movapd %xmm0,%xmm1
andpd %xmm3,%xmm2
ucomisd %xmm2,%xmm4
jbe 1f
cvttsd2siq %xmm0,%rax
pxor %xmm1,%xmm1
movsd one(%rip),%xmm2
cvtsi2sdq %rax,%xmm1
cmpnlesd %xmm1,%xmm0
andpd %xmm2,%xmm0
addsd %xmm1,%xmm0
pxor %xmm2,%xmm2
movsd 3f(%rip),%xmm4
andnpd %xmm1,%xmm3
cvtsi2sdq %rax,%xmm2
cmpnlesd %xmm2,%xmm0
andpd %xmm4,%xmm0
addsd %xmm2,%xmm0
orpd %xmm3,%xmm0
1: .leafepilogue
.endfn ceil,globl
.rodata.cst8
nan: .double nan
sig: .quad 0x0010000000000000
one: .double 1
// vroundsd $_MM_FROUND_TO_POS_INF|_MM_FROUND_NO_EXC,%xmm0,%xmm0,%xmm0
2: .long 0x00000000
.long 0x43300000
3: .long 0x00000000
.long 0x3ff00000
.rodata.cst16
4: .long 0xffffffff
.long 0x7fffffff
.long 0x00000000
.long 0x00000000