121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
/* Test fxtract instruction. */
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#include <stdint.h>
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#include <stdio.h>
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union u {
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struct { uint64_t sig; uint16_t sign_exp; } s;
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long double ld;
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};
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volatile union u ld_pseudo_m16382 = { .s = { UINT64_C(1) << 63, 0 } };
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volatile union u ld_invalid_1 = { .s = { 1, 1234 } };
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volatile union u ld_invalid_2 = { .s = { 0, 1234 } };
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volatile union u ld_invalid_3 = { .s = { 0, 0x7fff } };
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volatile union u ld_invalid_4 = { .s = { (UINT64_C(1) << 63) - 1, 0x7fff } };
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volatile long double ld_sig, ld_exp;
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int isnan_ld(long double x)
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{
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union u tmp = { .ld = x };
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return ((tmp.s.sign_exp & 0x7fff) == 0x7fff &&
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(tmp.s.sig >> 63) != 0 &&
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(tmp.s.sig << 1) != 0);
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}
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int issignaling_ld(long double x)
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{
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union u tmp = { .ld = x };
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return isnan_ld(x) && (tmp.s.sig & UINT64_C(0x4000000000000000)) == 0;
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}
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int main(void)
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{
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int ret = 0;
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) : "0" (2.5L));
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if (ld_sig != 1.25L || ld_exp != 1.0L) {
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printf("FAIL: fxtract 2.5\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) : "0" (0.0L));
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if (ld_sig != 0.0L || __builtin_copysignl(1.0L, ld_sig) != 1.0L ||
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ld_exp != -__builtin_infl()) {
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printf("FAIL: fxtract 0.0\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) : "0" (-0.0L));
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if (ld_sig != -0.0L || __builtin_copysignl(1.0L, ld_sig) != -1.0L ||
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ld_exp != -__builtin_infl()) {
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printf("FAIL: fxtract -0.0\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (__builtin_infl()));
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if (ld_sig != __builtin_infl() || ld_exp != __builtin_infl()) {
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printf("FAIL: fxtract inf\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (-__builtin_infl()));
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if (ld_sig != -__builtin_infl() || ld_exp != __builtin_infl()) {
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printf("FAIL: fxtract -inf\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (__builtin_nanl("")));
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if (!isnan_ld(ld_sig) || issignaling_ld(ld_sig) ||
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!isnan_ld(ld_exp) || issignaling_ld(ld_exp)) {
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printf("FAIL: fxtract qnan\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (__builtin_nansl("")));
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if (!isnan_ld(ld_sig) || issignaling_ld(ld_sig) ||
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!isnan_ld(ld_exp) || issignaling_ld(ld_exp)) {
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printf("FAIL: fxtract snan\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (0x1p-16445L));
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if (ld_sig != 1.0L || ld_exp != -16445.0L) {
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printf("FAIL: fxtract subnormal\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (ld_pseudo_m16382.ld));
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if (ld_sig != 1.0L || ld_exp != -16382.0L) {
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printf("FAIL: fxtract pseudo\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (ld_invalid_1.ld));
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if (!isnan_ld(ld_sig) || issignaling_ld(ld_sig) ||
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!isnan_ld(ld_exp) || issignaling_ld(ld_exp)) {
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printf("FAIL: fxtract invalid 1\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (ld_invalid_2.ld));
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if (!isnan_ld(ld_sig) || issignaling_ld(ld_sig) ||
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!isnan_ld(ld_exp) || issignaling_ld(ld_exp)) {
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printf("FAIL: fxtract invalid 2\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (ld_invalid_3.ld));
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if (!isnan_ld(ld_sig) || issignaling_ld(ld_sig) ||
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!isnan_ld(ld_exp) || issignaling_ld(ld_exp)) {
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printf("FAIL: fxtract invalid 3\n");
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ret = 1;
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}
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__asm__ volatile ("fxtract" : "=t" (ld_sig), "=u" (ld_exp) :
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"0" (ld_invalid_4.ld));
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if (!isnan_ld(ld_sig) || issignaling_ld(ld_sig) ||
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!isnan_ld(ld_exp) || issignaling_ld(ld_exp)) {
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printf("FAIL: fxtract invalid 4\n");
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ret = 1;
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}
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return ret;
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}
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