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Fix floatscan no long double usage (#21)

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* fix long double using in floatscan

* define separate macroses for copysignl, fmodl, and scalbnl instead of #ifndef
This commit is contained in:
vms 2019-04-23 00:37:03 +03:00 committed by Dan Gohman
parent 29d45024c7
commit 4194578ae8
2 changed files with 10 additions and 0 deletions
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6
libc-top-half/headers/private/printscan.h
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@ -37,6 +37,12 @@ typedef double long_double;
#define LDBL_MAX_10_EXP DBL_MAX_10_EXP
#undef frexpl
#define frexpl(x, exp) frexp(x, exp)
#undef copysignl
#define copysignl(x, y) copysign(x, y)
#undef fmodl
#define fmodl(x, y) fmod(x, y)
#undef scalbnl
#define scalbnl(arg, exp) scalbn(arg, exp)
__attribute__((__cold__, __noreturn__))
static void long_double_not_supported(void) {
void abort(void) __attribute__((__noreturn__));

4
libc-top-half/musl/src/internal/floatscan.c
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@ -287,7 +287,11 @@ static long double decfloat(FILE *f, int c, int bits, int emin, int sign, int po
/* Assemble desired bits into floating point variable */
for (y=i=0; i<LD_B1B_DIG; i++) {
if ((a+i & MASK)==z) x[(z=(z+1 & MASK))-1] = 0;
#if defined(__wasilibc_printscan_no_long_double)
y = 1000000000.0 * y + x[a+i & MASK];
#else
y = 1000000000.0L * y + x[a+i & MASK];
#endif
}
y *= sign;