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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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41
tool/viz/lib/ansitrinsics.h Normal file
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#ifndef COSMOPOLITAN_TOOL_VIZ_LIB_ANSITRINSICS_H_
#define COSMOPOLITAN_TOOL_VIZ_LIB_ANSITRINSICS_H_
#include "libc/limits.h"
#include "libc/macros.h"
#include "libc/str/str.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
static unsigned char avgb(unsigned char a, unsigned char b) {
return (a + b + 1) / 2;
}
static void pavgb(const unsigned char *restrict c,
const unsigned char *restrict b, unsigned char *restrict a) {
unsigned i;
for (i = 0; i < 16; ++i) a[i] = avgb(c[i], b[i]);
}
static void vpavgb(const unsigned char *restrict c,
const unsigned char *restrict b, unsigned char *restrict a) {
unsigned i;
for (i = 0; i < 32; ++i) a[i] = avgb(c[i], b[i]);
}
static void paddsw(const short c[8], const short b[8], short a[8]) {
size_t j;
for (j = 0; j < 8; ++j) {
a[j] = MIN(SHRT_MAX, MAX(SHRT_MIN, b[j] + c[j]));
}
}
static void vpaddsw(const short c[16], const short b[16], short a[16]) {
size_t j;
for (j = 0; j < 16; ++j) {
a[j] = MAX(SHRT_MIN, MIN(SHRT_MAX, b[j] + c[j]));
}
}
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_TOOL_VIZ_LIB_ANSITRINSICS_H_ */