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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [gcc/] [testsuite/] [gcc.target/] [i386/] [sse4_1-roundss-4.c] - Rev 839
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/* { dg-do run } */ /* { dg-require-effective-target sse4 } */ /* { dg-options "-O2 -msse4.1" } */ /* { dg-skip-if "no M_PI" { vxworks_kernel } } */ #include "sse4_1-check.h" #include <smmintrin.h> #include <math.h> #include <string.h> #define NUM 64 static void init_round (float *src) { int i, sign = 1; float f = rand (); for (i = 0; i < NUM; i++) { src[i] = (i + 1)* f * M_PI * sign; if (i < (NUM / 2)) { if ((i % 6) == 0) f = f * src[i]; } else if (i == (NUM / 2)) f = rand (); else if ((i % 6) == 0) f = 1 / (f * (i + 1) * src[i] * M_PI *sign); sign = -sign; } } static float do_round (float f, int type) { short saved_cw, new_cw, clr_mask; float ret; if ((type & 4)) { type = 0; clr_mask = 0xFFFF; } else { type = 0x003F | ((type & 3) << 10); clr_mask = ~0x0C3F; } __asm__ ("flds %0" : : "m" (*&f)); __asm__ ("fstcw %0" : "=m" (*&saved_cw)); new_cw = saved_cw & clr_mask; new_cw |= type; __asm__ ("fldcw %0" : : "m" (*&new_cw)); __asm__ ("frndint\n" "fstps %0\n" : "=m" (*&ret)); __asm__ ("fldcw %0" : : "m" (*&saved_cw)); return ret; } static void sse4_1_test (void) { int i, j; float f; union { __m128 x[NUM / 4]; float f[NUM]; } dst, src; init_round (src.f); memset (&dst, 0, NUM * sizeof(float)); for (i = 0; i < NUM / 4 ; i++) dst.x[i] = _mm_round_ss (dst.x[i], src.x[i], _MM_FROUND_RINT); for (i = 0; i < NUM; i += 4) { for (j = 0; j < 3; j++) if (dst.f[i + j + 1] != 0.0) abort (); f = do_round (src.f[i], 0x04); if (f != dst.f[i]) abort (); } for (i = 0; i < NUM / 4 ; i++) dst.x[i] = _mm_round_ss (dst.x[i], src.x[i], _MM_FROUND_NEARBYINT); for (i = 0; i < NUM; i += 4) { for (j = 0; j < 3; j++) if (dst.f[i + j + 1] != 0.0) abort (); f = do_round (src.f[i], 0x0c); if (f != dst.f[i]) abort (); } }
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