提交 1b77b907 编写于 作者: S Szabolcs Nagy

math: minor scalbn*.c simplification

上级 56b57f37
......@@ -10,10 +10,8 @@ double scalbn(double x, int n)
if (n > 1023) {
x *= 0x1p1023;
n -= 1023;
if (n > 1023) {
STRICT_ASSIGN(double, x, x * 0x1p1023);
return x;
}
if (n > 1023)
n = 1023;
}
} else if (n < -1022) {
x *= 0x1p-1022;
......@@ -21,10 +19,8 @@ double scalbn(double x, int n)
if (n < -1022) {
x *= 0x1p-1022;
n += 1022;
if (n < -1022) {
STRICT_ASSIGN(double, x, x * 0x1p-1022);
return x;
}
if (n < -1022)
n = -1022;
}
}
INSERT_WORDS(scale, (uint32_t)(0x3ff+n)<<20, 0);
......
......@@ -10,10 +10,8 @@ float scalbnf(float x, int n)
if (n > 127) {
x *= 0x1p127f;
n -= 127;
if (n > 127) {
STRICT_ASSIGN(float, x, x * 0x1p127f);
return x;
}
if (n > 127)
n = 127;
}
} else if (n < -126) {
x *= 0x1p-126f;
......@@ -21,10 +19,8 @@ float scalbnf(float x, int n)
if (n < -126) {
x *= 0x1p-126f;
n += 126;
if (n < -126) {
STRICT_ASSIGN(float, x, x * 0x1p-126f);
return x;
}
if (n < -126)
n = -126;
}
}
SET_FLOAT_WORD(scale, (uint32_t)(0x7f+n)<<23);
......
......@@ -17,7 +17,7 @@ long double scalbnl(long double x, int n)
x *= 0x1p16383L;
n -= 16383;
if (n > 16383)
return x * 0x1p16383L;
n = 16383;
}
} else if (n < -16382) {
x *= 0x1p-16382L;
......@@ -26,7 +26,7 @@ long double scalbnl(long double x, int n)
x *= 0x1p-16382L;
n += 16382;
if (n < -16382)
return x * 0x1p-16382L;
n = -16382;
}
}
scale.e = 1.0;
......
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