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 30571-c0dfe82732) Lines: 1467 1530 95.9 % Date: 2025-12-07 09:22:06 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296484
RgX_gtofp_bit	7031834
RgX_normalize1	35905
X2XP1	5990176
ZX_Uspensky	1313874
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48652
ZX_rescale2prim	2233673
ZX_sturm	6395
ZX_sturm_i	123200
ZX_sturm_irred	116805
ZX_sturmpart	1128209
ZX_to_ZiX	16455889
ZiX_sqr	99029098
_gen_nored	11202932
_gen_one	14473156
_gen_zero	326148
_intervalcmp	0
_mp_add	24663132
_mp_cmul	34764232
_mp_mul	4374577
_mp_sqr	6298276
_mp_sub	0
_sqrtnr	22708
a_posteriori_errors	537296
abs_update	8005438
abs_update_r	778680
all_roots	536186
append_clone	1614315
bkeval_single_power	5235881
check_ab	1178837
checkbound	2354803
checkvalidpol	267064
clean_roots	536236
cleanroots	231763
cmp_complex_appr	2238715
conformal_basecase	1403894
conformal_mapping	467927
conformal_pol	1404015
dblexp	6549103
dbllog2	302103865
dft	502368
dual_modulus	1012472
eval_rel_pol	13138468
fft	14159893
fft2	7462
findpower	40954963
fix_roots	537298
fix_roots1	398491
fujiwara_bound	2271907
fujiwara_bound_real	1406912
graeffe	49506757
homothetie	1610121
homothetie2n	9957983
homothetie_gauss	36496544
ind_maxlog2	902664
initdft	996348
isexactpol	239753
isexactscalar	931714
isreal	961909
isvalidcoeff	1230259
logmax_modulus	4450930
logmin_modulus	1614797
logmodulus	606774
logpre_modulus	606770
logradius	493978
lower_bound	40955515
mydbllog2i	226431501
mydbllog2r	56183493
mydbllogr	9546833
mygprec	63758607
mygprec_absolute	4340643
mygprec_special	537297
mygprecrc	215192820
mygprecrc_special	2179382
myshiftic	135826089
myshiftrc	35508040
newton_polygon	5507403
optimize_split	493982
parameters	493981
pol_to_gaussint	17589344
polgraeffe	14
polmod_to_embed	84
polrootsbound	27304
polrootsbound_i	27297
polsolve	166723
quicktofp	6979393
realroots	50627
refine_F	502361
refine_H	2460470
root_error	1912785
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289419
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494344
split_0_1	468290
split_0_2	468290
split_1	467927
split_2	493978
split_complete	1525975
split_fromU	493982
split_pols	166725
splitcauchy	166732
splitpoleval	5235662
tocomplex	1214141
update_radius	493978
usp	1126024

Generated by: LCOV version 1.16