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RealView Libraries and Floating Point Support Guide
Preface Introduction The C and C++ Libraries The C Micro-library Floating‑point Support The software floating‑point library, fplib
Features of the floating‑point library, fplib Arithmetic on numbers in a particular format Conversions between floats, doubles, and ints Conversions between long longs and other number fo Floating‑point comparisons C99 functions Controlling the floating‑point environment __ieee_status() __fp_status() __vfp_status() Microsoft compatibility functions C99 compatible functions ARM compiler extensions to the C99 interface The math library, mathlib Range reduction in mathlib Determine the type of a floating‑point number (f Determine if a number is finite (isfinite) Determine if a number is infinite (isinf) Determine if a number is a NaN (isnan) Determine if a number is normal (isnormal) Return the sign bit of a number (signbit) Copy sign functions (copysign, copysignf) Comparison macros (isgreater, isgreaterequal, isle Inverse hyperbolic functions (acosh, asinh, atanh) Cube root (cbrt) Error functions (erf, erfc) One less than exp(x) (expm1) Gamma function (gamma, gamma_r) Hypotenuse function (hypot) Bessel functions of the first kind (j0, j1, jn) The logarithm of the gamma function Logarithm of one more than x (log1p) IEEE 754 remainder function (remainder) IEEE round‑to‑integer operation (rint) Return the fraction part of a number (significand) Bessel functions of the second kind (y0, y1, yn) Legacy, Exponent of a number (ilogb, ilogbf, ilogb Legacy, Determine if a number is finite (finite) Legacy, Determine if a number is a NaN (isnan) IEEE 754 arithmetic Basic data types Arithmetic and rounding ExceptionsFloating‑point Support
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Table of Contents
- 4.1. The software floating‑point library, fplib
- 4.2. Controlling the floating‑point environment
- 4.3. The math library, mathlib
- 4.3.1. Range reduction in mathlib
- 4.3.2. Determine the type of a floating‑point number (fpclassify)
- 4.3.3. Determine if a number is finite (isfinite)
- 4.3.4. Determine if a number is infinite (isinf)
- 4.3.5. Determine if a number is a NaN (isnan)
- 4.3.6. Determine if a number is normal (isnormal)
- 4.3.7. Return the sign bit of a number (signbit)
- 4.3.8. Copy sign functions (copysign, copysignf)
- 4.3.9. Comparison macros (isgreater, isgreaterequal, isless, islessequal, islessgreater, isunordered)
- 4.3.10. Inverse hyperbolic functions (acosh, asinh, atanh)
- 4.3.11. Cube root (cbrt)
- 4.3.12. Error functions (erf, erfc)
- 4.3.13. One less than exp(
x) (expm1) - 4.3.14. Gamma function (gamma, gamma_r)
- 4.3.15. Hypotenuse function (hypot)
- 4.3.16. Bessel functions of the first kind (j0, j1, jn)
- 4.3.17. The logarithm of the gamma function
- 4.3.18. Logarithm of one more than x (log1p)
- 4.3.19. IEEE 754 remainder function (remainder)
- 4.3.20. IEEE round‑to‑integer operation (rint)
- 4.3.21. Return the fraction part of a number (significand)
- 4.3.22. Bessel functions of the second kind (y0, y1, yn)
- 4.3.23. Legacy, Exponent of a number (ilogb, ilogbf, ilogbl)
- 4.3.24. Legacy, Determine if a number is finite (finite)
- 4.3.25. Legacy, Determine if a number is a NaN (isnan)
- 4.4. IEEE 754 arithmetic
This chapter describes the ARM support for floating‑point computations. It contains the following sections:
| Copyright © 2007 ARM Limited. All rights reserved. | ARM DUI 0378A |
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