/* This is code generated by xlc -O3 for conversion of a double to an unsigned 32-bit int, in a "floor" style. It relies on doing an fadd with a non-standard rounding mode and so checks that V handles the rounding mode correctly. r will be 1 if that is not so. */ #include <stdio.h> extern unsigned int xlc_double_to_u32 ( double ); asm("\n" ".text\n" ".global xlc_double_to_u32\n" ".type xlc_double_to_u32, @function\n" "xlc_double_to_u32:\n" " stwu %r1,-48(%r1)\n" " addis %r4,%r0,.const_dr@ha\n" " addis %r0,%r0,17376\n" " fabs %f0,%f1\n" " addi %r3,%r0,0\n" " mffs %f3\n" " mtfsb1 4*cr7+so\n" " lfs %f2,.const_dr@l(%r4)\n" " fcmpu 0,%f1,%f0\n" " fadd %f0,%f0,%f2\n" " mtfsf 255,%f3\n" " stfd %f0,24(%r1)\n" " bne- $+0x1c\n" " lwz %r3,24(%r1)\n" " subf %r0,%r3,%r0\n" " srawi %r0,%r0,31\n" " ori %r0,%r0,0x0000\n" " lwz %r4,28(%r1)\n" " or %r3,%r4,%r0\n" " addi %r1,%r1,48\n" " blr\n" ".size xlc_double_to_u32, . - xlc_double_to_u32\n" " .long 0\n" " .long 0x00000000\n" " .long 0x00000000\n" ".previous\n" "\n" " .section \".rodata\",\"a\"\n" " .align 3\n" " .type .const_dr,@object\n" " .size .const_dr,20\n" ".const_dr:\n" " .long 0x59804000\n" " .long 0x49424d20\n" " .long 0x3fe66666\n" " .long 0x66666666\n" " .long 0x25640a00\n" ".previous\n" ); int main (int argc, char** argv) { unsigned int r = xlc_double_to_u32 ( 0.7 ); if (r == 0) printf("pass\n"); else printf("fail\n"); return 0; }