strtopf.c File Reference

#include "gdtoaimp.h"

Include dependency graph for strtopf.c:

Go to the source code of this file.

Functions
int	strtopf (CONST char *s, char **sp, float *f)

Function Documentation

strtopf()

int strtopf	(	CONST char *	s,
		char **	sp,
		float *	f
	)

Definition at line 40 of file strtopf.c.

{
    static FPI fpi = {24, 1 - 127 - 24 + 1, 254 - 127 - 24 + 1, 1, SI};
    ULong bits[1], *L;
    Long exp;
    int k;

    k = strtodg(s, sp, &fpi, &exp, bits);
    L = (ULong*)f;
    switch(k & STRTOG_Retmask)
    {
        case STRTOG_NoNumber:
        case STRTOG_Zero:
            L[0] = 0;
            break;

        case STRTOG_Normal:
        case STRTOG_NaNbits:
            L[0] = (bits[0] & 0x7fffff) | (unsigned)((exp + 0x7f + 23) << 23);
            break;

        case STRTOG_Denormal:
            L[0] = bits[0];
            break;

        case STRTOG_Infinite:
            L[0] = 0x7f800000;
            break;

        case STRTOG_NaN:
            L[0] = f_QNAN;
    }
    if(k & STRTOG_Neg)
    {
        {
            L[0] |= 0x80000000L;
        }
    }
    return k;
}

References Long, SI, strtodg(), STRTOG_Denormal, STRTOG_Infinite, STRTOG_NaN, STRTOG_NaNbits, STRTOG_Neg, STRTOG_NoNumber, STRTOG_Normal, STRTOG_Retmask, and STRTOG_Zero.