Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30719-2b7f142d49) Lines: 1467 1530 95.9 % Date: 2026-02-28 09:24:01 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296127
RgX_gtofp_bit	7029326
RgX_normalize1	35731
X2XP1	5990028
ZX_Uspensky	1313703
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5390
ZX_realroots_irred	48571
ZX_rescale2prim	2233659
ZX_sturm	6395
ZX_sturm_i	122977
ZX_sturm_irred	116582
ZX_sturmpart	1128200
ZX_to_ZiX	16448911
ZiX_sqr	99014000
_gen_nored	11208224
_gen_one	14474417
_gen_zero	326026
_intervalcmp	0
_mp_add	24663834
_mp_cmul	34779170
_mp_mul	4374658
_mp_sqr	6298473
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	536935
abs_update	8003901
abs_update_r	778568
all_roots	535830
append_clone	1613458
bkeval_single_power	5235534
check_ab	1178827
checkbound	2354782
checkvalidpol	266890
clean_roots	535879
cleanroots	231763
cmp_complex_appr	2237319
conformal_basecase	1403531
conformal_mapping	467806
conformal_pol	1403652
dblexp	6547497
dbllog2	302057244
dft	502244
dual_modulus	1012225
eval_rel_pol	13134745
fft	14155618
fft2	7462
findpower	40946351
fix_roots	536934
fix_roots1	398301
fujiwara_bound	2271077
fujiwara_bound_real	1406687
graeffe	49499156
homothetie	1609684
homothetie2n	9954918
homothetie_gauss	36488654
ind_maxlog2	902459
initdft	996102
isexactpol	239753
isexactscalar	931714
isreal	961664
isvalidcoeff	1228143
logmax_modulus	4449590
logmin_modulus	1614378
logmodulus	606575
logpre_modulus	606574
logradius	493856
lower_bound	40944875
mydbllog2i	226374653
mydbllog2r	56171369
mydbllogr	9545022
mygprec	63745052
mygprec_absolute	4337539
mygprec_special	536940
mygprecrc	215131081
mygprecrc_special	2178165
myshiftic	135835250
myshiftrc	35496730
newton_polygon	5505516
optimize_split	493858
parameters	493859
pol_to_gaussint	17584472
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166687
quicktofp	6977016
realroots	50627
refine_F	502242
refine_H	2460013
root_error	1911574
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288350
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494220
split_0_1	468171
split_0_2	468171
split_1	467807
split_2	493858
split_complete	1525374
split_fromU	493857
split_pols	166689
splitcauchy	166698
splitpoleval	5236134
tocomplex	1213242
update_radius	493856
usp	1125955

Generated by: LCOV version 1.16