From d6434e1042f3b0a6dfe1b1f615af369486f9b1fa Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Sat, 9 Oct 1999 00:00:47 +0000 Subject: Merge with 2.3.19. --- arch/ppc/math-emu/fsubs.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 arch/ppc/math-emu/fsubs.c (limited to 'arch/ppc/math-emu/fsubs.c') diff --git a/arch/ppc/math-emu/fsubs.c b/arch/ppc/math-emu/fsubs.c new file mode 100644 index 000000000..80c808f98 --- /dev/null +++ b/arch/ppc/math-emu/fsubs.c @@ -0,0 +1,45 @@ +/* $Id: fsubs.c,v 1.1 1999/08/23 19:00:07 cort Exp $ + */ + +#include +#include +#include + +#include "soft-fp.h" +#include "double.h" +#include "single.h" + +int +fsubs(void *frD, void *frA, void *frB) +{ + FP_DECL_D(A); + FP_DECL_D(B); + FP_DECL_D(R); + int ret = 0; + +#ifdef DEBUG + printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB); +#endif + + __FP_UNPACK_D(A, frA); + __FP_UNPACK_D(B, frB); + +#ifdef DEBUG + printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); + printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); +#endif + + if (B_c != FP_CLS_NAN) + B_s ^= 1; + + if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF) + ret |= EFLAG_VXISI; + + FP_ADD_D(R, A, B); + +#ifdef DEBUG + printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); +#endif + + return (ret | __FP_PACK_DS(frD, R)); +} -- cgit v1.2.3