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Linux/arch/powerpc/math-emu/fmuls.c

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  1 #include <linux/types.h>
  2 #include <linux/errno.h>
  3 #include <asm/uaccess.h>
  4 
  5 #include <asm/sfp-machine.h>
  6 #include <math-emu/soft-fp.h>
  7 #include <math-emu/double.h>
  8 #include <math-emu/single.h>
  9 
 10 int
 11 fmuls(void *frD, void *frA, void *frB)
 12 {
 13         FP_DECL_D(A);
 14         FP_DECL_D(B);
 15         FP_DECL_D(R);
 16         FP_DECL_EX;
 17 
 18 #ifdef DEBUG
 19         printk("%s: %p %p %p\n", __func__, frD, frA, frB);
 20 #endif
 21 
 22         FP_UNPACK_DP(A, frA);
 23         FP_UNPACK_DP(B, frB);
 24 
 25 #ifdef DEBUG
 26         printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
 27                A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023);
 28         printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
 29                B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023);
 30 #endif
 31 
 32         if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) ||
 33             (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF))
 34                 FP_SET_EXCEPTION(EFLAG_VXIMZ);
 35 
 36         FP_MUL_D(R, A, B);
 37 
 38 #ifdef DEBUG
 39         printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
 40                R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023);
 41 #endif
 42 
 43         __FP_PACK_DS(frD, R);
 44 
 45         return FP_CUR_EXCEPTIONS;
 46 }
 47 

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